package thread;

/**
 * 线程安全
 */



public class ThreadDemo6 {
    public static class Counter {
        public volatile int count = 0;

        void increase() {
            count++;
        }
    }

    public static void main(String[] args) throws InterruptedException {
        final Counter counter = new Counter();
        Thread t1 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                counter.increase();
            }
        });
        Thread t2 = new Thread(() -> {
            for (int i = 0; i < 50000; i++) {
                counter.increase();
            }
        });
        t1.start();
        t2.start();
        t1.join();
        t2.join();
        System.out.println(counter.count);
    }
}
